One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,8)(5,6)(7,11)(10,16)(12,14)(13,15)(17,18,23,27)(19,24,22,26)(20,25,31,21)(28,30,29,32)(34,38)(36,43)(39,44)(42,47)(2,6)(7,9)(8,12)(15,16)(17,19,23,22)(18,24,27,26)(20,29,31,28)(21,30,25,32)(35,41)(39,44)(42,47)(46,48)(2,6)(7,9)(8,12)(15,16)(17,20,23,31)(18,25,27,21)(19,28,22,29)(24,30,26,32)(33,34,37,38)(35,39,41,44)(36,40,43,45)(42,46,47,48)(1,2)(3,7)(4,12)(5,6)(8,14)(9,11)(10,16)(13,15)(17,20)(18,21)(19,29)(22,28)(23,31)(24,30)(25,27)(26,32)(33,35,37,41)(34,39,38,44)(36,42,43,47)(40,46,45,48)(1,3,5,11)(2,7,6,9)(4,13,14,10)(8,16,12,15)(17,21)(18,20)(19,30)(22,32)(23,25)(24,29)(26,28)(27,31)(33,36)(34,40)(35,42)(37,43)(38,45)(39,46)(41,47)(44,48)(1,4,5,14)(2,8,6,12)(3,10,11,13)(7,15,9,16)(17,22,23,19)(18,26,27,24)(20,29,31,28)(21,30,25,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.